Construction machine having electrical component

Abstract

Provided is a construction machine including an electrical component and efficiently cooling it. The construction machine includes an upper slewing body having an air intake chamber capable of taking in air, an engine, the electrical component, an air intake duct guiding the air inside the air intake chamber toward the engine, a blow fan directing the air inside the air intake chamber toward the engine through the air intake duct, and electrical-component cover covering the electrical component. The electrical-component cover defines an air flow path for flowing air along the electrical component, between the electrical-component cover and the electrical component thereinside. The electrical-component cover includes an air inlet communicating an upstream portion of the air flow path with the air intake chamber and an air outlet communicating a downstream portion of the air intake chamber with the air intake duct.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a construction machine having an electrical component.[0003]2. Description of the Background Art[0004]Conventionally, there is known a construction machine including an electrical component such as a mechatronics controller, as disclosed in Japanese Unexamined Patent Publication No. 2005-146741. Disclosed therein is a hydraulic excavator including an electrical component such as a mechatronics controller. The hydraulic excavator includes an upper slewing body on which a cab is loaded. The cab has a box shape including a rear plate portion, on which the electrical component is mounted. Mounting the electrical component on the rear plate portion allows the operator to access the electrical component from the outside of the cab, and allows a work space for accessing the electrical component to be secured.[0005]However, in a construction machine having a limited space for disposing parts, su...

AI Technical Summary

Benefits of technology

[0006]An object of the invention is to provide a construction machine including an engine and an electrical component, the construction machine being capable of efficiently cooling the electrical component so as to prevent the electrical component from damage due to heat given off by the engine. Provided is a construction machine including: a lower traveling body; an upper slewing body slewably loaded on the lower traveling body, the upper slewing body including an air intake chamber capable of taking in air; an engine loaded on the upper slewing body; an electrical component loaded on the upper slewing body; an air intake duct forming a duct flow path for guiding the air taken into the

Problems solved by technology

However, in a construction machine having a limited space for disposing parts, such as a hydraulic excavator with a rear portion having a small slewing radius, a mechatronics controller is disposed below a seat stand on which a operation seat is placed, in order to prevent each of electr

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